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The Delta variant (B.1.617.2) was first found in India and is the dominant strain in the country, the Beta variant (B.1.351) was first discovered in South Africa.

South africaBalram bhargavaPragya yadavNational institute of virologyIndian council of medical researchPune national institute of virologyImage sourceNational instituteIndian councilMedical researchBharat biotechPune based national instituteStudy on covaxinDelta variantsCovaxin protectionIndia based coronavirus vaccine